Spray nozzle and strainer



Feb, 23, 1937 w. CZARNECKI 2,071,929

SPRAY NOZZLE AND STRAINER F iled Dec. 18, 1954 2 Sheets-Sheet 1 INVENTOR:

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Feb. 23, @937. w CZARNECKE SPRAY NOZZLE AND STRAINER Filed Dec. 18, 1934 2 Sheets-Sheet 2 INVENTQR:

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ATTORNEY atented Feb. 23, 1937 PATENT OFFICE [SPRAY NOZZLE AND 8mm Walter Czarnecki, Eddington, Pan,

assignor :Eddington Metal Specialty 00., Eddington, Pa.,

a; corporation oi Pennsylvania Application December 18, 1934, Serial No. 757,995

4 Claims. I

This invention relates to spray nozzle and strainer; and has for an object to provide a device of the type embodying new and improved features of structure, Providing 'new and im proved functions in the device.

A further object of the invention is to provide a 'device of the type wherein the swirl chamber, provided by a taper in the nozzle, is contacted by a terminal member contoured to fit tapers of various inclinations.

A further object of'the invention is to provide a device of the type having a nozzle tip provided with an internal conical bore communicating with the discharge orifice, and a terminal member fitting said cpnical bore andpresenting thereto a spherical segment with kerfs formedtherein extending across the circumference of contact, and projected into the swirl chamber provided which is the discharge orifice.

A further object of the invention is to provide a terminal member of spherical form having a plurality of sockets therein with tangentally arranged kerfs diametrically opposite said sockets, the kerfs being cut to different depths, providing, when applied, passages of different capacities.

A furtherobject of the invention is to provide a deviceof the type'ha'ving'an improved type of strainer therein.

thereby 'tangental 'to a circle, the center oi A further object of the invention is to provide a device of the typehavinga strainer formed as contacting the ,endsof thecylindrieal strainer. M

The invention; therefore, comprises a housing member including a'tip part, jsaid' tip part being provided with a discharge'jorifice and a conically concentrically therewith,with' a terminal member having one or more spherical segments providedwith kerisarg ranged tangentally to the'circlej-oi 'contact' b tween the segment and the conical" chamber, with a cylinder, with separable heads tapered bore communicating j means for supporting the l erminahmember in fitting'contact with 'said conical bore, and to conduct liquid upon the "exterior 'of'the terminal" member" and "throughthe tangehtal kerfs' into a swirl chamber provided the tapered bore 'in-' terlying the segment-"and the discharge orifice,

with a strainer formed as 'a'cylinderwith heads proportioned to make fittingfcontact with the ends of'the said cylinder,the-heads being interconnected by a central connecting member which makes' 'provision for separating the heads to remove the cylindrical strainer fof cleaning or re-it' placement.

1 of the invention The drawings illustrate several embodiments and the views therein are as follows: E

Figure 1 is a view partly in diametrical section and partly in elevation of one embodiment of the improved nozzle and strainer,

Figure 2 is a view in elevation of the tip of the type shown at Figure 1,

Figure 3 is a view in elevation of the casing shown in diametrical section at Figure 1,

Figure 4 is a view partly in diametrical section and partly in elevation of a modified type of the tip-burner,

Figure 5 is aview partly in elevation and partly in section of the union nut shown in diametrical section at Figure 4,

Figure 6 is a view in elevation of the housing connection shown in diametrical section at Fig-v ure 4,

Figure 7 is a view partly in elevation and partly in section of the tip member,

Figure 8 is a view in elevation of the terminal .member, as shown at Figures 1 and 4,

Figure 9 is a view of the terminal member in end elevation, as indicated by arrow 8 at Figure 8,

Figure 10 is a view in end elevation of the terminal-member-supporting sleeve,

Figure 11' is a view in elevation of the terminal member and its supporting sleeve combined,

Figure 12 is a'view partly in diametrical section and partly in elevation of the tip member, as shown at Figure 1, with a modified type of terminal memb'ershown therein,

Figure 13 is aview partly in diametrical section and partly in elevation of the type of tip memher-shown at Figure '4, with the modified type of terminalmembertherein; v v

i ure 14is a view of the'terminal member disassociatedfr'om its'supporting parts and being a sphere;--all views-are' alike: a a

-'Figure 15 is a view partly in elevation and partly in section of the sphere supporting member,

Figure 16 is 'a view in elevationof the cylindrical-strainer as shown at Figure 1.

Figure 17 is a view of the cylindrical strainer in plan, as indicated by arrow "at 16,

Figure 18' is a view in elevationof one of the heads "for thecylindricalstrainer showing the connection with the opposite head,

"Figure 19 is a view in 'end elevation of the 5 strainer'head, as indicated by arrow [9 at Figu'rel8,

Figure 20- is aview in elevation of-the other strainer head cooperating with the headshown at Figure 21 is a view partly in elevation and partly in section of the strainer shown at Figure 4,

Figure 22 is a view partly in elevation and partly in section of one of the heads for the strainer shown at Figure 21,

Figure 23 is a view partly in elevation and partly in section of the other head for the strainer shown at 21, and

Figure 24 is a view in elevation of the connection between the heads shown at Figures 22 and 23.

Like characters of reference indicate corresponding parts throughout the several views.

The spray nozzle and strainer which enters into the present application is adapted more particularly as a spray nozzle for an oil burner, and, therefore, comprises a base 30 with a threaded connection 3| for application to a pipe or conduit.

In the type shown at Figure l the tip 32 attaches directly to the base 30 through the medium of an integral sleeve 33. The connection is through the screw threads 34 and the tip is provided with a discharge orifice 35, such as is well-known in the art. The interior of the tip is provided with a bore 36 tapered conica ly at 31 with the discharge orifice as the apex. Cooperating with this tip is a terminal member 38 presenting within the conical bore a spherical segment which has kerfs 39 formed therein spanning the circle of contact 40 so that the kerfs form passages from the chamber 36 through said kerfs to the swirl chamber 4| interposed between the terminal member and the discharge orifice 35.

By forming the terminal member with a contacting surface spherical in form, it will make positive contact with conical bores of different tapers. The taper of the bore and, therefore, of the swirl chamber, determines the'divergence of the spray delivered from the orifice 35. The wider the angle of the tapered bore the wider the angle of the spray, and conversely, the narrower the angle of the tapered bore the more condensed the spray.

For supporting the terminal member 38 and clamping it in such positive engagement, a sleeve 42 is provided properly proportioned to fit the shank 43 carrying the terminal member 38. This sleeve 43 is provided with an enlarged threaded section 44 making threaded engagement with the interior of the chamber 36, as shown more particularly at Figure 1.

It is also provided with perforations 45 which form communication from the interior of the sleeve to the exterior. The sleeve member is provided with a kerf 46 for cooperation with a screw driver or like implement for screwing home the section 44 and, therefore, clamping the terminal member firmly in position. The kerf 41 in the terminal member is merely for loosening the terminal member from the sleeve 43 when occasion may require.

For cooperation with the spraying structure thus provided a strainer 48 is employed constructed as a cylinder. For mounting this cylinder a head 49 is provided having threads 50 which engage the internal screw threads of the tip beneath the threaded part 44 of the terminal member support.

The member 49 is provided with a threaded opening 51 for engaging the threads 52 upon the shank 53 of the head 54. The heads 49 and 54,- respectively, are provided with grooves 55 and 58 in which the ends of the cylindrical strainer are respectively seated. The shank 53 is also hollow,

as shown at 51, throughout the greater part of its length, and is provided with lateral passages 58 forming communication between the interior of said shank and the annular chamber formed thereabout by the strainer 49.

In different installations of oil burners, even though the structure installed is substantially identical, the delivery of different quantities of oil per hour is desirable. For this purpose, instead of constructing the terminal member as a semi-sphere, as suggested at Figure 8, it may be constructed as a complete sphere, as shown at 59 at Figures 12, 13 and 14.

This spherical member 59 is provided with a plurality of sockets 50, any one of which will provide a sliding fit for the stud 6| carried upon the threaded base 62. Kerfs 63 are formed in the faces of this sphere opposite each of the sockets 50, so that, irrespective of which socket may be occupied by the stud 6|, an opposite face will be presented similar to that shown at Figures 9 or 14 having kerfs formed therein properly proportioned and positioned to discharge into the swirl chamber 4| a quantity of oil depending upon the depth to which the kerfs are cut, it being the intent that such kerfs are out different depths in said sphere for the purpose of controlling the flow.

The base 62 is provided with a kerf 64 for the application of a screw driver or like implement to force the spherical terminal member into the position shown by the hemispherical member at Figures 1 and 4. This base 62 is provided with one or more passages 65 therein for the passage of oil or other liquid from the strainer to the chamber surrounding said terminal member.

At Figure 4 a slight variation of the structure is shown, the base 30 being provided with a threaded sleeve 66 and the tip 61 provided with an annular shoulder 68 against which the flange 59 of the lock nut 10 engages to hold the tip member 61 in engagement with the head H of the strainer combination shown therein.

This strainer combination difiers from the strainer combination heretofore described only in that the head II is provided with a central screw-threaded opening 12 and with passages 13 spaced in an annular circle about said central opening 12. It is provided with an annular groove 55 exactly as shown in the head 49. The oppo-,, site head 14 is likewise provided with the groove 56 corresponding to the groove in the headj 54, but is provided with a central threaded, opening 15. A stud 16, ends, is adapted to make connection between the head II and the head 14 with the strainer 49 clamped therebetween, as shown at Figure 4.

The difference between the strainer shown in Figure 1 and that shown in Figure 4 is that merely that at Figure 1 is composed of three parts, while that at Figure 4 is composed of four parts, but the cooperation. of the parts and the association with other parts is identical, and the two strainers are intended to be interchangeable as are the terminal members 38 and 59.

The housings and tips shown at Figures 1 and 4 may be used as may be found necessary or desirable, together with any of the internal structure, as shown and described.

In assembling the type shown at Figure 1, if the hemispherical terminal member is employed, the shank 43 is inserted into the sleeve 42 and by the use of a screw driver or like implement, the combined structure is then screwed into the chamber 36 until firm and complete contact has screw-threaded at its opposite been made between the spherical segment and the tapered walls of the bore 31 to form the swirl chamber 4|. If the type including the whole sphere is employed, then the stud 6| is inserted into the selected socket 60, and the structure thus combined screwed home in exactly the same manner. -This arrangement of parts will be identically carried out in the structure shown at Figure 4.

With the type of strainer shown at Figures 16- 20 inclusive, the cylindrical strainer 48 will be seated in the groove of the head 49 and the shank 53 inserted axially through said cylindrical strainer into the threaded part 5| of the head 49 and screwed home until the heads 49 and 54 make contact with the ends of the strainer to exclude oilexcept' such as passes through the strainer.

With the type of strainer shown at Figures 21- 24 inclusive, the strainer 48 will be seated in the groove 55'of the head H and the stud l6 seated in the threaded opening 12 either before or after the seating of the strainer. The head 14 will now be screwed upon the opposite end of the stud 16 until the ends of the cylindrical strainer are properly and firmly seated in the grooves 55 and 56.

With either arrangement, the strainer is now combined with the housing inthe type shown at Figure 1 by screwing into the tip 32, and in the type shown at Figure 4, by seating the flange of the head between the tip 6! and the sleeve 66 of the body.

When assembled in any of these relations the tip is applied to the inlet conduit at the threaded part 3| in the usual manner. I

As has been explained, the taper of thetlp will be varied in accordance with the type of spray designed to be discharged therefrom, and the terminal member of the sperical type will be associated therewith for the employment of the kerfs adapted for of oil.

In operation, the type assembled, as at Figure 1, the oil will enter within the sleeve 33, passing through the strainer 48, about the shank 53 and through the lateral passages 58 into the central passage 51. From this passage the oil will pass upwardly into the sleeve 42 and outwardly through the lateral passages 45 into the annular chamber 36, thence upwardly into the conically' tapered part and through the kerfs 39 into the swirl chamber 4| to be discharged through the orifice 35.

delivery of the required volume.

' In the device assembled, as at Figure 4, the oil will likewise pass into the sleeve 66 and through the strainer 48, then through the passage 13 and into the sleeve 42, out through the lateral passages 45, and as before disclosed.

Of course, when the spherical contact member is employed, the oil passes through the passages instead of into the sleeve 42 and outwardly through the lateral passages 45, but otherwise the operation is identical.

-Of course, the spray nozzle and strainer illusstrated may be modified and changed in various ways without departing from the invention herein set forth and hereinafter claimed.

I claim:-

1. A nozzle unit comprising a housing and tip, said tip having a conically tapered chamber and a discharge orifice extending from the apex of said conical chamber, a spherical terminal member presenting, a spherical segment within the taper of the conical chamber, said spherical member having a plurality of sockets, means engaging one of said sockets selectively to clamp the spherical member within said conical chamber, and kerfs formed in the spherical surface of said member opposite each of said sockets spanning the circle of engagement of the spherical member with the conical taper.

2. A nozzle unit comprising a housing and tip, said tip being provided with a chamber cylindrical in part and conical in part, said conical part having a discharge orifice continuing from the apex thereof, internal threads formed in the .cylindrical part of the chamber, a disc externally threaded engaging the internal threads of the chamber and having a stud upstanding therefrom, and a spherical terminal member having a plurality of sockets proportioned to fit upon said stud, said spherical member further having kerfs formed in the spherical segment opposite each of the sockets, the kerfs in the several segments varying indepth and positioned to by-pass the line of contact of the terminal member with the taper of the conical part of the chamber.

3. In a nozzle unit, a spherical terminal member having a plurality of radial sockets, and kerfs cut in spherical segments opposite each of said sockets.

4. In a nozzle unit, a spherical terminal member having a plurality of radial sockets, and kerfs formed in groups in segments opposite each of said sockets, the kerfs of the different groups being formed of different depths.

WALTER CZARNECKI. 

